rtkLUTbasedVariableI0RawToAttenuationImageFilter.h

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/*=========================================================================
 *
 *  Copyright RTK Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         https://www.apache.org/licenses/LICENSE-2.0.txt
 *
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 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
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 *=========================================================================*/

#ifndef rtkLUTbasedVariableI0RawToAttenuationImageFilter_h
#define rtkLUTbasedVariableI0RawToAttenuationImageFilter_h

#include <itkNumericTraits.h>
#include <itkSubtractImageFilter.h>
#include <itkLogImageFilter.h>
#include <itkThresholdImageFilter.h>

#include "rtkLookupTableImageFilter.h"

namespace rtk
{
template <class TInputImage, class TOutputImage>
class ITK_TEMPLATE_EXPORT LUTbasedVariableI0RawToAttenuationImageFilter
  : public LookupTableImageFilter<TInputImage, TOutputImage>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(LUTbasedVariableI0RawToAttenuationImageFilter);

  using Self = LUTbasedVariableI0RawToAttenuationImageFilter;
  using Superclass = LookupTableImageFilter<TInputImage, TOutputImage>;
  using Pointer = itk::SmartPointer<Self>;
  using ConstPointer = itk::SmartPointer<const Self>;

  using InputImagePixelType = typename TInputImage::PixelType;
  using OutputImagePixelType = typename TOutputImage::PixelType;
  using LookupTableType = typename Superclass::FunctorType::LookupTableType;
  using SubtractLUTFilterType = typename itk::SubtractImageFilter<LookupTableType>;
  using ThresholdLUTFilterType = typename itk::ThresholdImageFilter<LookupTableType>;
  using LogLUTFilterType = typename itk::LogImageFilter<LookupTableType, LookupTableType>;

  itkNewMacro(Self);

#ifdef itkOverrideGetNameOfClassMacro
  itkOverrideGetNameOfClassMacro(LUTbasedVariableI0RawToAttenuationImageFilter);
#else
  itkTypeMacro(LUTbasedVariableI0RawToAttenuationImageFilter, LookupTableImageFilter);
#endif


  itkGetMacro(I0, double);
  itkSetMacro(I0, double);

  itkGetMacro(IDark, double);
  itkSetMacro(IDark, double);

  void
  BeforeThreadedGenerateData() override;

protected:
  LUTbasedVariableI0RawToAttenuationImageFilter();
  ~LUTbasedVariableI0RawToAttenuationImageFilter() override = default;

private:
  double                                   m_I0;
  double                                   m_IDark;
  typename SubtractLUTFilterType::Pointer  m_SubtractRampFilter;
  typename ThresholdLUTFilterType::Pointer m_ThresholdRampFilter;
  typename LogLUTFilterType::Pointer       m_LogRampFilter;
  typename SubtractLUTFilterType::Pointer  m_SubtractLUTFilter;
};
} // end namespace rtk

#ifndef ITK_MANUAL_INSTANTIATION
#  include "rtkLUTbasedVariableI0RawToAttenuationImageFilter.hxx"
#endif

#endif